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Epp O, Ladenstein R, Wendel A (1983) The refined structure of the selenoenzyme glutathione peroxidase at 0.2-nm resolution

[1] Picomolar activity is unusual for a small peptide and suggests high-affinity receptor-mediated signaling, though the specific receptor for GHK-Cu has never been identified

For significant changes in hyperpigmentation, it may take up to 3 to 6 months to see the full benefits

bioRxiv , 2022.2004

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Many by-products, including fish scales and heads, are underutilized or discarded (Ramakrishnan et al., 2023